The AD8353 is a broadband, fixed-gain, linear amplifier that operates at frequencies from 1 MHz up to 2.7 GHz. It is intended for use in a wide variety of wireless devices, including cellular, broadband, CATV, and LMDS/MMDS applications. By taking advantage of ADI’s high performance, complementary Si bipolar process, these gain blocks provide excellent stability, high output power and low noise.
The AD8353 is a broadband, fixed‑gain, linear RF amplifier designed for wireless devices such as cellular, broadband, CATV, and LMDS/MMDS applications. It provides a constant 20 dB gain, 9 dBm linear output power, and a low noise figure across a 1 MHz‑2.7 GHz frequency range.
Key specifications include a 3 V (or 5 V optional) supply, 41 mA typical supply current, 50 Ω input/output matching, reverse isolation better than –35 dB, and an OIP3 of over 23 dBm at 900 MHz. The device is offered in an 8‑lead LFCSP package and an evaluation board is available for prototyping.
| Frequency Range | 1 MHz – 2.7 GHz |
|---|---|
| Fixed Gain | 20 dB |
| Output Power (typical) | 9 dBm |
| Noise Figure (900 MHz) | 5.3 dB |
| Total Supply Current | 41 mA |
| Reverse Isolation (S12, 900 MHz) | -35.6 dB |
| Input Return Loss (900 MHz) | 22.3 dB |
| Output Compression Point (1 dB, 900 MHz) | 9.1 dBm |
The AD8353 operates from 1 MHz up to 2.7 GHz.
It provides a fixed gain of 20 dB.
The device can be powered from 3 V, with an optional 5 V supply that removes the need for an external inductor.
The AD8353 can deliver up to 9 dBm of linear output power.